It returns a character just entered from the standard input unit. The entered character is echoed (displayed) to the computer screen. It reads a single character the moment it is typed without waiting for the Enter key to be hit.

It returns a character just entered from the standard input unit. The entered character is not echoed on the screen. It reads a single character the moment it is typed without waiting for the Enter key to be hit.

? It reduces the complexity in a program by reducing the code
? Function are easily understanding and reliability and execution is faster
? It also reduces the time to run a program.In other way, Its directly proportional to complexity
? Its easy to find-out the errors due to the blocks made as function definition outside the main function

The value returned by sizeof (char) is always 1 since char uses only one byte in any machine. For other data types, the number of bytes used to represent a data type depends on the implementation of a compiler.

The operators can be defined as symbols which specify operations to be performed. The C language includes a number of operators. These operators are used in different combinations to form expressions. The data items on which the operators act upon are known as operands.